7. In addition to the hinge joint, name four other types of synovial joint.

ANSWER: pivot; condylar; plane; ball & socket.

8. What are the four movements of an angular joint?

ANSWER: flexion; extension; abduction; adduction.

9. Name the three types of muscle; which one is also described as 'striped' or 'striated'?

ANSWER: skeletal; cardiac; smooth. Skeletal is striped or striated.

10. What are the two types of contractile protein and where are they contained? What is used in the process of contraction?

ANSWER: actin; myosin. Muscle fibre or cells. ATP/Energy.

11. Describe what happens at a neuromuscular junction.

ANSWER: An action potential is transmitted to the muscle via a motor nerve; the electrical signal is transmitted to the muscle chemically (acetyl choline) across the gap between the nerve and the muscle; an action potential is generated in the muscle; the acetyl choline is broken down and/or taken back up into the nerve ending.

12. What are the ends of a skeletal muscle called where it joins to the skeleton? What joins the muscle to the bone and what is it made of?

ANSWER: Origin and insertion; tendon, made of collagen.

13. Which two muscles of the arm control the movement of the lower arm? How would you describe the relative position of these muscles and which one is responsible for extending the arm?